ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ


รหัส / code คำอธิบาย / code name Version
E21B0047008000 Monitoring of down-hole pump systems, e.g. for the detection of "pumped-off" conditions 1
E21B0047009000 Monitoring of walking-beam pump systems 1
E21B0047010000 Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like 1
E21B0047013000 Devices specially adapted for supporting measuring instruments on drill bits 1
E21B0047017000 Protecting measuring instruments 1
E21B0047020000 Determining slope or direction 1
E21B0047022000 of the borehole, e.g. using geomagnetism 1
E21B0047022400 using seismic or acoustic means 1
E21B0047022800 using electromagnetic energy or detectors therefor 1
E21B0047023200 at least one of the energy sources or one of the detectors being located on or above the ground surface 1
E21B0047023600 using a pendulum 1
E21B0047024000 of devices in the borehole (E21B0047022000 takes precedence);; 1
E21B0047026000 of penetrated ground layers 1
E21B0047040000 Measuring depth or liquid level 1
E21B0047047000 Liquid level (E21B0047053000 takes precedence);; 1